A dichotomous key is a type of single-access key that gives only two choices at one time, These keys are commonly used in biology in order to identify an unknown animal or plant.
I got the first 3 the answers are A,D, and C good luck with the rest
By spreading the seeds of other plants with others, effectivly creating the first pesticides
LOL Hope this helps!<span />
The anwser is the nitrogen goes ininto the nodules of the plant
So the phospholipids are arranged in a double layer (a bilayer) to keep the cell separate from its environment. Lipids do not mix with water (recall that oil is a lipid), so the phospholipid bilayer of the cell membrane acts as a barrier, keeping water out of the cell, and keeping the cytoplasm inside the cell.
